Question

I want to dump a subset of a table of my postgres database. Is there a way to dump a SELECT statement without creating a view?

I need to copy a part of the table to an other postgres database.

Answer 1

Use COPY to dump it directly to disk.

Example (from the fine manual) using a SELECT:

COPY 
(SELECT * FROM country WHERE country_name LIKE 'A%') 
TO '/usr1/proj/bray/sql/a_list_countries.copy';